1. Lesson 2 Cells Introduction
What is a cell?
What are the two main characteristics of cells?

2. Do Now Take out your word generation packet. page 5
Do you think taking a graduation exam will lower SAT scores?

3. Do Now
Know
Want to know
Learned
The_Magic_of_Cells.wmv

4. Essential Questions What is a cell?
What are the two main characteristics of cells?

5. Vocabulary
Cells
Cell membrane
Cytoplasm
Cell wall
Organelle
Nucleus

6. Chloroplast
Mitochondrion
Ribosome
Endoplasmic reticulum
Golgi body
Tissue
organ

7. Summarization Activity
What is a cell?

8. Do Now
Review cell vocabulary.

9. Essential Question What is a cell?
What are the two main characteristics of cells?

10. Assignment Turn to page 38.Life Science Book Read page 38-45.
Reread your assigned section.
Take notes on your assigned section.
Be prepared to share your notes with the class.

11. Common Cell Traits
cell membrane
cytoplasm

12. Comparing Cells Cells come in many sizes.
The shape of the cell can tell you something about its function.

13. Cell Types
Prokaryotic cells- cells without membrane structures- one cell organisms- like bacteria
Eukaryotic cells- cells with membrane-bound structures like protists, fungi, plant, and animal cells.

14. Cell Wall
Cell walls are tough, rigid outer coverings that protect the cell and give it its shape.

15. Cell Membrane the protective layer around the cell membrane
The cell membrane regulates interaction between the cell and the environment.
Water can move through it.
Food particles and some molecules enter and waste leave through it.

16. Cytoplasm
Gelatinlike substance that constantly flows inside the cell membrane.
Many important chemical reactions occur within the cytoplasm.
Most of a cell’s life processes occur here.
Within the cytoplasm of a eukaryotic cell are structures called organelles.

17. Nucleus directs all activities
is separated from the cytoplasm by a membrane
DNA- chemical that contains the code for all the cell’s structure and activities
Chromosomes
A structure called a nucleolus also is found in the nucleus.

18. Energy Processing Organelles
In plants, food is made in green organelles in the cytoplasm called chloroplast.
Chloroplast contain chlorophyll which gives leaves and stems their green color.
Mitochondria- store energy and release it.

19. Manufacturing Organelles
Ribosomes are small structures on which cells make their own proteins.
Ribosomes receive direction from hereditary material in the nucleus on how, when, and in what order to make specific proteins.

20. Processing, Transporting, and Storing Organelles
The endoplasmic reticulum (ER) extends from the nucleus to the cell membrane.
ER is a series of folded membranes in which material can be processed and moved around inside the cell.
Golgi bodies sort proteins and other substances and package them to vesicles.
Vacuoles store water, waste, food, and other material.

21. Recycling Organelles
Lysosomes contain digestive chemicals that help bread down food molecules, waste, and worn out cell parts.

22. From Cell to Organism
Many one-celled organisms perform all their life function by themselves.
Most work with others.
Tissue-group of similar cells that work together to do a job.
Organs- structure made up of two or more different tissues that work together.

23. Do Now
Revisit your KWL chart. What did
you learn.

24. introducing the cell.asf
Complete the handout in your packet as you
watch the video.

25. Ticket out the door What is a cell?
What are the two main characteristics of cells?